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Serology in dengue

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https://www.readbyqxmd.com/read/28437465/serological-evidence-for-transmission-of-multiple-dengue-virus-serotypes-in-papua-new-guinea-and-west-papua-prior-to-1963
#1
Dagwin Luang-Suarkia, Timo Ernst, Michael P Alpers, Ralph Garruto, David Smith, Allison Imrie
Little is known about the natural history of dengue in Papua New Guinea (PNG). We assessed dengue virus (DENV)-specific neutralizing antibody profiles in serum samples collected from northern and southern coastal areas and the highland region of New Guinea between 1959 and 1963. Neutralizing antibodies were demonstrated in sera from the northern coast of New Guinea: from Sabron in Dutch New Guinea (now known as West Papua) and from four villages in East Sepik in what is now PNG. Previous monotypic infection with DENV-1, DENV-2, and DENV-4 was identified, with a predominance of anti-DENV-2 neutralizing antibody...
April 24, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28435330/first-case-of-imported-chikungunya-infection-in-croatia-2016
#2
Boris Luksic, Nenad Pandak, Edita Drazic-Maras, Svjetlana Karabuva, Mislav Radic, Andrea Babic-Erceg, Ljubo Barbic, Vladimir Stevanovic, Tatjana Vilibic-Cavlek
In recent years, several European countries reported cases of imported chikungunya infection. We present the first imported clinically manifested chikungunya fever in Croatia. A 27-year-old woman returned to Croatia on 21 March 2016, after she stayed in Costa Rica for two months where she had noticed a mosquito bite on her left forearm. Five days after the mosquito bite she developed severe arthralgias, fever and erythematous papular rash. In next few days symptoms gradually subsided. After ten days she felt better, but arthralgias re-appeared accompanied with morning stiffness...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28429036/a-review-of-zika-virus-infections-in-pregnancy-and-implications-for-antenatal-care-in-singapore
#3
Harvard Zhenjia Lin, Paul Anantharajah Tambyah, Eu Leong Yong, Arijit Biswas, Shiao-Yng Chan
Given the consensus that there is a causal relationship between Zika virus (ZIKV) infection in pregnancy and congenital Zika syndrome (CZS), clinicians must be prepared to manage affected patients despite the numerous gaps in current knowledge. The clinical course in pregnancy appears similar to that in non-pregnant women, although viraemia may be prolonged. ZIKV infection can be diagnosed by serum and urine reverse transcription-polymerase chain reaction, but commercially available serological tests are currently unreliable in dengue-endemic regions...
April 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28418292/lack-of-durable-cross-neutralizing-antibodies-against-zika-virus-from-dengue-virus-infection
#4
Matthew H Collins, Eileen McGowan, Ramesh Jadi, Ellen Young, Cesar A Lopez, Ralph S Baric, Helen M Lazear, Aravinda M de Silva
Cross-reactive antibodies elicited by dengue virus (DENV) infection might affect Zika virus infection and confound serologic tests. Recent data demonstrate neutralization of Zika virus by monoclonal antibodies or human serum collected early after DENV infection. Whether this finding is true in late DENV convalescence (>6 months after infection) is unknown. We studied late convalescent serum samples from persons with prior DENV or Zika virus exposure. Despite extensive cross-reactivity in IgG binding, Zika virus neutralization was not observed among primary DENV infections...
May 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28414004/clinical-virological-and-epidemiological-characterization-of-dengue-outbreak-in-myanmar-2015
#5
A K Kyaw, M M Ngwe Tun, M L Moi, T Nabeshima, K T Soe, S M Thwe, A A Myint, K T T Maung, W Aung, D Hayasaka, C C Buerano, K Z Thant, K Morita
Hospital-based surveillance was conducted at two widely separated regions in Myanmar during the 2015 dengue epidemic. Acute phase serum samples were collected from 332 clinically diagnosed dengue patients during the peak season of dengue cases. Viremia levels were measured by quantitative real-time PCR and plaque assays using FcγRIIA-expressing and non-FcγRIIA-expressing BHK cells to specifically determine the infectious virus particles. By serology and molecular techniques, 280/332 (84·3%) were confirmed as dengue patients...
April 17, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28408930/a-case-of-initially-undiagnosed-chikungunya-arthritis-developing-into-chronic-phase-in-a-nonendemic-area
#6
Pui Shan Julia Chan, Moon Ho Leung
This case report described a 40-year-old lady presented with fever, headache, arthralgia, myalgia, and impaired liver function after returning from the Philippines. Chikungunya virus (CHIKV) and dengue serology were negative. Eight weeks after initial presentation, she experienced inflammatory polyarthritis mimic rheumatoid arthritis. This time CHIKV-IgM was detected, together with a >4-fold rise of CHIKV-polyvalent-antibody titre. The first CHIKV-IgM negative sample was reexamined and was CHIKV-PCR positive...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28403751/management-of-dengue-in-australian-travellers-a-retrospective-multicentre-analysis
#7
MULTICENTER STUDY
Alex Yc Tai, Sarah L McGuinness, Roselle Robosa, David Turner, G Khai Lin Huang, Karin Leder, Tony M Korman, Irani Thevarajan, Andrew J Stewardson, Alexander A Padiglione, Douglas F Johnson
OBJECTIVES: To describe the epidemiology, clinical and laboratory features and outcomes of dengue in returned Australian travellers, applying the revised WHO dengue classification (2009) to this population. DESIGN, SETTING AND PARTICIPANTS: Retrospective case series analysis of confirmed dengue cases hospitalised at one of four Australian tertiary hospitals, January 2012 - May 2015. MAIN OUTCOME MEASURES: Clinical features, laboratory findings and outcomes of patients with dengue; dengue classification according to 2009 WHO guidelines...
April 17, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28403441/clinical-and-laboratory-diagnosis-of-dengue-virus-infection
#8
REVIEW
David A Muller, Alexandra C I Depelsenaire, Paul R Young
Infection with any of the 4 dengue virus serotypes results in a diverse range of symptoms, from mild undifferentiated fever to life-threatening hemorrhagic fever and shock. Given that dengue virus infection elicits such a broad range of clinical symptoms, early and accurate laboratory diagnosis is essential for appropriate patient management. Virus detection and serological conversion have been the main targets of diagnostic assessment for many years, however cross-reactivity of antibody responses among the flaviviruses has been a confounding issue in providing a differential diagnosis...
March 1, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28401256/immune-mediated-cytokine-storm-and-its-role-in-severe-dengue
#9
REVIEW
Anon Srikiatkhachorn, Anuja Mathew, Alan L Rothman
Dengue remains one of the most important mosquito-borne diseases worldwide. Infection with one of the serologically related dengue viruses (DENVs) can lead to a wide range of clinical manifestations and severity. Severe dengue is characterized by plasma leakage and abnormal bleeding that can lead to shock and death. There is currently no specific treatment for severe dengue due to gaps in understanding of the underlying mechanisms. The transient period of vascular leakage is usually followed by a rapid recovery and is suggestive of the effects of short-lived biological mediators...
April 11, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28388922/viral-and-serological-kinetics-in-zika-virus-infected-patients-in-south-korea
#10
Young Eui Jeong, Go-Woon Cha, Jung Eun Cho, Eun Ju Lee, Youngmee Jee, Won-Ja Lee
Zika virus is a mosquito-borne flavivirus that causes clinical symptoms similar to those observed in dengue and chikungunya virus infections. The Korea Centers for Disease Control and Prevention initiated laboratory testing using a real-time reverse transcription-polymerase chain reaction in January 2016. More than 1,000 suspected cases of infection were tested and nine were confirmed as imported cases of Zika virus infection from January to July 2016. The travel destinations of the infected individuals were Brazil, Philippines, Viet Nam, Guatemala, Puerto Rico, and the Dominican Republic...
April 7, 2017: Virology Journal
https://www.readbyqxmd.com/read/28375541/unravelling-the-paediatric-and-perinatal-zika-virus-epidemic-through-population-based-research
#11
Cdc Christie, C Giaquinto
Zika virus epidemic now involves 72 countries, worldwide. Transmission is multimodal through mosquito bites and blood and body fluids. Zika virus causes Guillain Barre Syndrome syndrome and pregnancy complications including perinatal microcephaly. Diagnosis is complicated by subclinical infection in 80%, co-circulation with dengue and chikungunya fevers with similar presentations and cross-reactivity in serological tests. There is no cure, or preventive vaccine. Large population-based studies will help to elucidate ZIKV epidemiology, vertical transmission, risks to the fetus of maternal ZIKV infection and natural history of congenital and non-congenital ZIKV infection as provided by the activities in the "ZIKAction" research consortium in Latin America, Europe and the Caribbean, which was recently funded by the European Commission...
September 19, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/28333938/the-relationship-between-entomological-indicators-of-aedes-aegypti-abundance-and-dengue-virus-infection
#12
Elizabeth A Cromwell, Steven T Stoddard, Christopher M Barker, Annelies Van Rie, William B Messer, Steven R Meshnick, Amy C Morrison, Thomas W Scott
Routine entomological monitoring data are used to quantify the abundance of Ae. aegypti. The public health utility of these indicators is based on the assumption that greater mosquito abundance increases the risk of human DENV transmission, and therefore reducing exposure to the vector decreases incidence of infection. Entomological survey data from two longitudinal cohort studies in Iquitos, Peru, linked with 8,153 paired serological samples taken approximately six months apart were analyzed. Indicators of Ae...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28333935/dengue-seroprevalence-seroconversion-and-risk-factors-in-dhaka-bangladesh
#13
Parnali Dhar-Chowdhury, Kishor Kumar Paul, C Emdad Haque, Shakhawat Hossain, L Robbin Lindsay, Antonia Dibernardo, W Abdullah Brooks, Michael A Drebot
BACKGROUND: Dengue virus (DENV) activity has been reported in Dhaka, Bangladesh since the early 1960s with the greatest burden of dengue fever and dengue hemorrhagic fever cases observed in 2000. Since this time, the intensity of dengue activity has varied from year to year, and its determining factors remained relatively unknown. In light of such gaps in knowledge, the main objectives of this study were to determine the magnitude of seroprevalence and seroconversion among the surveyed population, and establish the individual/household level risk factors for the presence of DENV antibodies among all age groups of target populations in the city of Dhaka...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28327811/undiagnosed-acute-hiv-infection-identified-through-rna-testing-of-pooled-serum-samples-obtained-during-a-dengue-outbreak-in-s%C3%A3-o-paulo-brazil
#14
Elaine Monteiro Matsuda, Daniela Rodrigues Colpas, Norberto Camilo Campos, Luana Portes Ozorio Coelho, Andreia Moreira Dos Santos Carmo, Luís Fernando de Macedo Brígido
INTRODUCTION: Improving HIV diagnostics and treatment is necessary to end the AIDS epidemic. Pooled plasma can be used to identify patients with acute HIV disease, even before serological tests. During dengue outbreaks, patients having symptoms common to other acute viral diseases might seek medical care. METHODS: We evaluated HIV RNA in pooled seronegative dengue samples. RESULTS: After excluding individuals with a known HIV diagnosis, an HIV-1 prevalence of 0...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28306183/flavivirus-cross-reactivity-in-serological-tests-and-guillain-barr%C3%A3-syndrome-in-a-hematopoietic-stem-cell-transplant-patient-a-case-report
#15
Sonia M Raboni, Carmem Bonfim, Bernardo M Almeida, Camila Zanluca, Andrea C Koishi, Paula R V P Rodrigues, Claudia K Kay, Lisandro L Ribeiro, Rosana H Scola, Claudia N Duarte Dos Santos
Serological diagnosis of flavivirus infection is a challenge, particularly in the context of a disease associated with immune response enhancement in a transplant patient, where aspects such as previous flavivirus infections may be involved with the outcome. We report a case of a pediatric patient who developed Guillain-Barré syndrome (GBS) after matched-unrelated hematopoietic stem cell transplantation (HSCT). The patient lives in a Brazilian region that is experiencing an epidemic of Zika virus (ZIKV) and dengue virus (DENV)...
March 17, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28302072/imported-arboviral-infections-in-italy-july-2014-october-2015-a-national-reference-laboratory-report
#16
Claudia Fortuna, Maria Elena Remoli, Caterina Rizzo, Eleonora Benedetti, Cristiano Fiorentini, Antonino Bella, Claudio Argentini, Francesca Farchi, Concetta Castilletti, Maria Rosaria Capobianchi, Lorenzo Zammarchi, Alessandro Bartoloni, Nadia Zanchetta, Maria Rita Gismondo, Luca Ceccherini Nelli, Giustina Vitale, Franco Baldelli, Pierlanfranco D'Agaro, Giuseppe Sodano, Giovanni Rezza, Giulietta Venturi
BACKGROUND: Imported cases of infections due to Dengue (DENV) and Chikungunya (CHIKV) viruses and, more recently, Zika virus (ZIKV) are commonly reported among travelers returning from endemic regions. In areas where potentially competent vectors are present, the risk of autochthonous transmission of these vector-borne pathogens is relatively high. Laboratory surveillance is crucial to rapidly detect imported cases in order to reduce the risk of transmission. This study describes the laboratory activity performed by the National Reference Laboratory for Arboviruses (NRLA) at the Italian National Institute of Health in the period from July 2014 to October 2015...
March 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28292653/co-circulating-serotypes-in-a-dengue-fever-outbreak-differential-hematological-profiles-and-phylogenetic-relationships-among-viruses
#17
Andreia Moreira Dos Santos Carmo, Rodrigo Buzinaro Suzuki, Aline Diniz Cabral, Renata Torres da Costa, Gabriela Pena Massari, Michele Marcondes Riquena, Helio Augusto Alves Fracasso, Andre Eterovic, Arlei Marcili, Márcia Aparecida Sperança
BACKGROUND: Dengue virus, represented by four distinct, genetically diverse serotypes, is the etiologic agent of asymptomatic to severe hemorrhagic diseases. The spatiotemporal dynamics of dengue serotypes and its association to specific diseases vary among the different regions worldwide. By 2007, and in São Paulo State, Brazil, dengue-case concentration in urban centers had changed to increased incidence in small- and medium-sized towns, the case of Marília. OBJECTIVES: The aim of this article was to distinguish dengue serotypes circulating during the 2007 Marília outbreak and define their association to demographic and hematological patient profiles, as well as the phylogenetic relationships among the different viruses...
March 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28284914/dengue-virus-serological-prevalence-and-seroconversion-rates-in-children-and-adults-in-medellin-colombia-implications-for-vaccine-introduction
#18
Mabel Carabali, Jacqueline Kyungah Lim, Diana Carolina Velez, Andrea Trujillo, Jorge Egurrola, Kang Sung Lee, Jay S Kaufman, Luiz Jacinto DaSilva, Ivan Dario Velez, Jorge E Osorio
BACKGROUND: Dengue is an important public health problem worldwide. A vaccine has recently been licensed in some countries of Latin America and Asia. Recommendations for dengue vaccine introduction include endemicity and a high serological prevalence of dengue in the territories considering its introduction. METHODS: A community-based survey was conducted to estimate dengue seroprevalence and age-specific seroconversion rates in a community in Medellin, Colombia, using a dengue serological test (IgG indirect ELISA)...
March 9, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28283425/a-rapid-zika-diagnostic-assay-to-measure-neutralizing-antibodies-in-patients
#19
Chao Shan, Xuping Xie, Ping Ren, Michael J Loeffelholz, Yujiao Yang, Andrea Furuya, Alan P Dupuis, Laura D Kramer, Susan J Wong, Pei-Yong Shi
The potential association of microcephaly and other congenital abnormalities with Zika virus (ZIKV) infection during pregnancy underlines the critical need for a rapid and accurate diagnosis. Due to the short duration of ZIKV viremia in infected patients, a serologic assay that detects antibody responses to viral infection plays an essential role in diagnosing patient specimens. The current serologic diagnosis of ZIKV infection relies heavily on the labor-intensive Plaque Reduction Neutralization Test (PRNT) that requires more than one-week turnaround time and represents a major bottleneck for patient diagnosis...
March 2017: EBioMedicine
https://www.readbyqxmd.com/read/28280696/dengue-in-renal-transplant-recipients-clinical-course-and-impact-on-renal-function
#20
Paula Frassinetti Castelo Branco Camurça Fernandes, Reed André Siqueira, Evelyne Santana Girão, Rainne André Siqueira, Márcia Uchoa Mota, Leyla Castelo Branco Fernandes Marques, Silvana Cristina Albuquerque Andrade, Wilson Mendes Barroso, Sônia Leite Silva, Bruno Gomes Rodrigues Dos Santos, Claúdia Maria Costa de Oliveira
AIM: To present clinical characteristics from renal transplant recipients with dengue fever and its impact on graft function. METHODS: We retrospectively evaluated 11 renal transplant recipients (RTR) with dengue infection confirmed by laboratory test, between January 2007 and July 2012, transplanted in the Renal Transplant Center of Walter Cantídio University Hospital from Federal University of Ceará. RESULTS: Positive dengue serology (IgM) was found in all patients...
February 24, 2017: World Journal of Transplantation
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